The world’s largest companies have caused $ 28,000 million worth of climate damage (25,000 million euros), According to a new study. A research team at the University of Dartmouth has calculated the pollution caused by 111 companies. More than half of the total number come from 10 fossil fuel suppliers: Saudi Aramco, Casprome, Chevron, Exanmobil, PP, Shell, National Iranian Oil Co.
The total amount is slightly lower than the sum of all goods and services produced in the United States last year. Saudi Aramco and Casprome that heads the listEach has been damaged for decades of $ 2 billion (1.8 billion), a study published in the ‘Nature’ magazine last Wednesday.
Researchers assess it Every percent point of greenhouse gas $ 502,000 million (441 billion euros) to the atmosphere since 1990 Only in the colo damageA, there are no costs caused by other extreme weather events such as hurricane, drought and flooding.
The study “attempts to determine the reasons that are causing They underline many of these responsibilities“Christopher Calhan, the key writer who performed the tasks in Dartmouth, is now a scientist of terrain organizations at Stanford University.
People talk about pollutants and sometimes they take them to court Or recognize laws to prevent them. The number of Zero Carbon Analytics of the Research Institute 68 was filed for damage to the worldwide. For climate changeMore than half of them are in the United States.
“Everyone asks the same question: What can we really say about who has caused this?” Dartmouth Climate Justin Mankin, Study Co -teacher said. “It really reduces the problem of a thermal dynamics If we are able to monitor their damage to the climate risks and/or some emitters. “
Can you calculate the impact of the emissions of a particular company?
According to Calhan and Mankin, the answer is yes. Researchers started Known final emission Products such as petrol or electricity of coal power plants manufactured by 111 largest carbon emitting companies 137 years ago. That was the limit because they dated the distance they dated The company’s emission data, and carbon dioxide is the longest in the air.
They used 1,000 different computer simulations to translate those emissions into changes Global media temperature On the surface of the earth, it is compared to the world -free world. With this method, Decided to be the pollution of ChevranFor example, it has raised the earth’s temperature to 0.025 degrees Celsius.
Researchers also calculated contribution The pollution of each company Also in the warmer of the year by more than 80 computer simulations and Using a corresponding formula Intensity of extreme heat with changes in economic production.
This system follows the model of installed techniques used by scientists Weather event to change climate Peaks like Heat wave 2021 From the Pacific Northwest.
Mangin said it was discussed in the past: “Who can say that my CO2 molecule contributed to any other damage?” In his opinion, His study makes it clear that the veil is a veil of disbelief No longer scientifically. We can really monitor the damage to the main emitters. “Shell refused to comment. Aramco, Casprom, Chevron, Exan Mobil and PP did not respond to the demands of the comments.
“Great” scientific evidence can help claim climate responsibility
“All the methods used They are very firm, Extreme weather events They have worsened due to climate change, and, to what extent. He did not participate in the study.
“In my opinion, it is better if this approach is more accepted by different groups. Like the attribute of events.
Until now he has not improved anything Requirement for climate responsibility He said that against a large carbon offer, but “the greatest solidness of scientific evidence” may change this situation. In the past, Damage caused by individual companies They lost in the noise of the data, so they could not calculate it, said Calhan.
“Now we have reached a point in the climate crisis Total damage They are very enormous, and the contributions of a company’s production are dozens Billions of dollars per year“Stanford University’s climate scientist, Chris Field, who did not participate in the research.”
AdvertisementThis is a testament to a good exercise and opinion, which is not participating in the study, Michael Man, climate scientist of the University of Pennsylvania, but there are many climatic variables, but the statistics that have been achieved by Calhan and Mankin A large underestimation of damage Those companies have really caused.
